All names: MWD 0307-428, 2MASS J03093816-4240425, Gaia DR3 4850889278472424320, WDJ030938.18-424042.71, TIC 301021757, GALEX J030938.2-424042, Gaia EDR3 4850889278472424320, WD 0307-428, Gaia DR2 4850889278472424320
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 03 09 38.35 (0.03) | 03 09 38.35 (0.03) | 03 09 38.35 | 03 09 38.18 (0.03) | 03 09 38.35 | 03 09 37.42 | ||
| Declination | -42 40 42.38 (0.03) | -42 40 42.39 (0.04) | -42 40 42.38 | -42 40 42.72 (0.03) | -42 40 42.39 | -42 40 14.52 | ||
| Spectral type | DA | DAH | DAH | |||||
| Effective temperature | [K] | 9131.0 (59) | ||||||
| log(g) | [cgs] | 8.15 (0.01) | ||||||
| Mass | [M☉] | 0.689 (0.009) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 19.72 (0.03) | 19.69 (0.04) | 19.72 | 19.72 (0.03) | 19.69 (0.04) | ||
| Distance | [pc] | 50.71 (0.09) | 50.79 (0.1) | 50.71 | 50.71 (0.09) | 50.79 (0.1) | ||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 117.1782628 (0.03) | 117.1249481 (0.07) | 117.178 (0.03) | 117.1249481 | |||
| Proper motion (declination) | [mas/yr] | 21.17949817 (0.04) | 21.14516605 (0.1) | 21.179 (0.04) | 21.14516605 | |||
| Variability | ||||||||
| Magnetic | yes | |||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | 16.30 | |||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 15.97 (0.08) | |||||||
| H magnitude | 16.02 (0.2) | |||||||
| K magnitude | ||||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 16.23 (0.003) | 16.25 | 16.23 | 16.23 (0.003) | 16.25 | |||
| BP magnitude | 16.31 (0.003) | 16.30 | 16.30 | |||||
| RP magnitude | 16.08 (0.004) | 16.08 | 16.08 | |||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.001 | |||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.